Light reflection and refraction 161 let us recall these laws i the angle of incidence is equal to the angle of reflection, and ii the incident ray, the normal to the mirror at the point of incidence and the reflected ray, all lie in the same plane. Apr 06, 2020 laws of reflection, light reflection and refraction, class 10 science class 10 video edurev is made by best teachers of class 10. The light may be reflected back from the surface, transmitted through the material in which case it will deviate from its initial direction, a process known as refraction or absorbed by the material if. This video is highly rated by class 10 students and has been viewed 23 times. Currently includes only ks3 material but can easily be edited for ks4 by adding definitions of angle of refraction, etc. Six simple diagrams showing the key points of the topic of light, drawn for revision in year 8. R the law of refraction snells law relates how a ray of light will behave when passing from one media to the other.
A wave which undergoes this phenomenon is said to have been refracted. The geometry of reflection and refraction a wave incident on a boundary separating two media is reflected back into the first medium and some of the energy is transmitted, or refracted, into the second. These laws of reflection are applicable to all types of reflecting surfaces. Reflection and refraction chapter 3 47 chapter 3 reflection and refraction 3. The law of reflection snells law states that the ratio of the sines of the angles of incidence and refraction is equivalent to the ratio of velocities in the two media, or equivalent to the opposite ratio of the indices of refraction. Ii the ratio of the sine of angle of incidence to the sine of angle of refraction is a constant, for the light of a given colour and for the given pair of media. It is natural to treat the propagation of light in terms of rays. A ray of light strikes a polished surface at an angle of 37. Mcq, class 10 science class 10 notes edurev is made by best teachers of class 10.
The classes that give access to the metadata of a running program are in the system. Generalized laws of reflection and refraction from transformation optics yadong xu1, kan yao 1, and huanyang chen, a 1 school of physical science and technology, soochow university, suzhou 215006, china abstract. It covers, rather, the geometric optics of firstyear students, whom it will either help or confuse yet further, though i. The best app for cbse students now provides light reflection and refraction class 10 notes latest chapter wise notes for quick preparation of cbse board exams and school based annual examinations. We use your linkedin profile and activity data to personalize ads and to show you more relevant ads. Class 10 reflection and refraction of light light is the form of energy having both wave and particle nature. Please send us your suggestion about the show, then. Reflection objects are used for obtaining type information at runtime. In what way are reflection, refraction, and diffraction. Refraction is a phenomenon that occurs when waves passing from one transparent medium to another bend at the boundary between the two mediums due to a change in the speed of the waves. Refraction is the change in direction and phase velocity of a wave due to a change in the medium in which the wave is traveling.
During the course of analyzing our data, we calculated the index of refraction for the plastic lens and thereby the speed of light in the plastic. Light reflection and refraction notes for class 10 formulas download pdf. Here we use a mirror and a glass cuboid to demo the law of reflection and refraction of light. The geometry of refraction and reflection is governed by snells law which relates the angles of incidence, reflection and refraction to the. The general reflection and refraction laws at the metasurface with the abrupt phase shift were derived by two different methods of fermats principle and the boundary conditions respectively. However, it should be noted that the index of refraction for a given material is a function of wavelength and index increases as the wavelength gets shorter. Knowing the difference between reflection and refraction will help you understand basic phenomenon of science. State the laws of reflection and refraction, describe examples and apply the laws to simple. Follow report log in to add a comment what do you need to know. With reflection, light waves bounces off a medium while with refraction, light waves enter the medium and change direction. In what way are reflection, refraction, and diffraction similar.
Laws of reflection, light reflection and refraction. Cbse chapter wise practice papers with solution for class 10 science chapter 10 light reflection and refraction for free download in pdf format. Optics is the branch of physics where the behaviour and properties of light are studied. The incident ray, the normal to the surface and the reflected ray all lay on the same plane called the plane of incidence. Free fall equations acceleration word problems free fall problems velocity word problems galileo and the leaning tower of. This paper considers the newly discovered laws on reflection and refraction. Reflection, refraction and diffraction teaching resources. This slant reflects the sunlight further down toward the ground than would have happened if they were vertical. Students will cut out sentences and picture examples, then glue them in the correct column.
Reflection and refraction university of calgary in alberta. Applications of refraction of light physics special. Based on transformation optics, we introduce another set of generalized laws. In this chapter, we examine what happens when such a wave propagates from one material characterized by index n or even by complex index n to another.
Cbse test papers class 10 science light reflection and refraction. Light reflection and refraction notes for class 10. The amount of light reflected or refracted depends on the angle at which you are looking relative to the surface. Learn refraction practice questions with free interactive flashcards. Our study of geometrical optics will center on the application of two basic laws. Angle of incident ray with normali equals reflected ray with normalr. To simplify the study we will overlook the electromagnetic nature of light and use a light rays model. Vector formulations of the laws of reflection and refraction of forward and backward waves. The incident ray makes an angle of 900 with the surface. It recognizes that each point of an advancing wave front is in fact the center of a fresh disturbance and the source of a new train of waves.
To reduce glare of the surroundings, the windows of some department stores, rather than being vertical, slant inward at the bottom. The incident light is now scattered backwards without cancellation, this is reflection. Light reflection and refraction teaching resources. The incident ray, the normal to the surface and the reflected ray all lay on the same plane called the. Reflection and refraction powerpoint and notes by the. Our mission is to provide a free, worldclass education to anyone, anywhere. Reflection and refraction key points the ray model of light reflection and mirrors. Reflection and refraction equipment acrylic block set, planeconcaveconvex universal mirror, cork board, cork board stand, pins, flashlight, protractor, ruler, mirror worksheet, rectangular block worksheet, equilateral prism worksheet, converging lens worksheet.
Measure and record the object distance d o and the image distance d i. Simple powerpoint on the properties of reflection, refraction and diffraction. You may have seen your reflection in a mirror or maybe a rainbow pattern in a puddle of oil and wondered what exactly you were seeing. Light reflection and refraction class 10 notes science. Pdf vector formulations of the laws of reflection and. A line drawn in the direction of propagation of light is called a ray of light. Laws of reflection states that the angle of incidence is equal to the angle of reflection. Cbse class 10 science chapter 10 light reflection and refraction notes.
Generalized laws of reflection and refraction from. In this lesson students investigate reflection and refraction of light. Reflection and refraction when light hits a surface, one or more of three things may happen. Reflection, is when the light goes back to the previous medium, but changes direction. This document is highly rated by class 10 students and has been viewed 44477 times. Cbse class 10 science chapter 10 light reflection and. Opticsrefraction wikibooks, open books for an open world. This scattering is caused by the interaction of light with small particles, even atoms or molecules, within the material. Holscienceco 2 andson labs nc experient reflection and refraction. Find the critical angle for light traveling from water n 1. At least some part of the incoming wave remains in the same medium. Index of refraction can easily be changed and its effect immediately inves tigated. Objectives to verify the law of reflection by measuring some incident and reflection angles off of a mirrored surface to determine the relationship between the refraction of light and snells law.
Reflection and refraction university of california, berkeley. Powered by create your own unique website with customizable templates. A light ray is a line directed along propagation of electromagnetic energy. The law of reflection states that the angle of incident ray equals the angle of the reflected ray, or.
This experiment will study the phenomena of reflection and refraction of light. By altering the angle of incidence the refraction and reflection of a glass object is investigated, including total reflection. There are three laws which govern reflection and refraction. Step i find the image location, circle that point and label it i. Show why the reflection is not the same as the real scene by drawing a sketch of this situation, showing the sun, the. Cbse class 10 science chapter 10 light reflection and refraction notes in pdf are available for free download in mycbseguide mobile app. The laws of reflection and refraction universalclass. Reflection is the abrupt change in the direction of propagation of a wave that strikes the boundary between two different media. This powerpoint includes 10 slides about reflection and refraction. Sunlight enters a room at a certain angle above the horizontal and. This is a good description as long as the waves do not pass through small openings compared to. On the flip side, refraction is when light is absorbed by the medium but the direction and speed is affected. For a series of various incident angles, you will record the angles of reflection and refraction.
Reflection namespace contains classes that allow you to obtain information about the application and to dynamically add types, values, and objects to the. Reflection and refraction lab mbusd internet usage. Reflection and refraction lab page 3 seeing reflection and refraction at the same time both refraction and reflection often occur when light hits a boundary between materials such as the boundary between glass and air. Reflection and refraction 17 be scattered away from its original direction figure 2. Choose from 58 different sets of refraction practice questions flashcards on quizlet.
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